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20109 Alicelandis (1995 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2020109
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2367215903852827 9.0524e-08  
a 2.58090973682804 2.8701e-08 AU
q 1.969952679285245 2.385e-07 AU
i 9.271462822732181 1.1888e-05 deg
node 103.5311247538957 5.7969e-05 deg
peri 215.787015009028 6.4327e-05 deg
M 210.0715023162043 3.229e-05 deg
tp 2457431.223974745013
(2016-Feb-12.72397474)
0.00014283 JED
period 1514.45945511362
4.15
2.5263e-05
6.917e-08
d
yr
n .2377085756798894 3.9652e-09 deg/d
Q 3.191866794370835 3.5495e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      13016 days (35.64 yr)  
   first obs. used      1978-07-07  
   last obs. used      2014-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .68048  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:37:13  

Additional Information
 Earth MOID = .963686 AU 
 T_jup = 3.367 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4 mag n/a MPO250411  

20109 Alicelandis           Discovered 1995 Sept. 12 by J. L. Tonry at the Michgan-Dartmouth-MIT Observatory.
Alice Landis Tonry (b. 1921) was a graduate of Tufts Medical School, as well as a realtor, farmer and mother.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1995 RJ = 1978 NT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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